I all your prog, what do you use to get a Random number ??? it's not always _RANDOM i think, because if it was that, making "0->rand" in basic before playing ZTetris will give you always the same game... I wan't to make a prog that shutdown the calc, and each time you turn it on, make some code and shut down again, can someone help me ??? (i got a source "StartOn", but it doesn't seem to work) Thanx